gnome applet w/ bash

[Matteo Landi <matteo landi email it>]

hi all
i'm a complete newbie in developing with gtk, but yesterday i had an
idea about develope a gnome panel which could substitute conky..
In fact i'm in need of a panel that simply display the output of a bash
script..
well, after have googled a bit, i found a guide for implementing gnome
applet and here is the result

#include <string.h>
#include <panel-applet.h>
#include <gtk/gtklabel.h>
#include <stdio.h>

static gboolean on_button_press (GtkWidget *event_box, GdkEventButton
*event, GtkWidget* label){
	if (event->button != 1)
		return FALSE;
	else {
		FILE* fp;
		char line[160];
		fp = popen("~/scripts/allin1", "r");
		fgets( line, sizeof line, fp);
		pclose(fp);
		gtk_label_set_text (label,(const char*) line);
	}
	return TRUE;
}

static gboolean my_applet_fill (PanelApplet *applet, const gchar *iid,
gpointer data){
	FILE* fp;
	int pid;
	char line[160];
	GtkWidget *label;
	
	fp = popen("~/scripts/allin1", "r");
  	fgets( line, sizeof line, fp);
	pclose(fp);

	label = gtk_label_new (line);
	gtk_container_add (GTK_CONTAINER (applet), label);

	g_signal_connect (G_OBJECT(applet), "button_press_event", G_CALLBACK
(on_button_press), label);

	gtk_widget_show_all (GTK_WIDGET (applet));
	
			
	return TRUE;
}

PANEL_APPLET_BONOBO_FACTORY ("OAFIID:my_applet_Factory",
PANEL_TYPE_APPLET, "Conky Porting", "0", my_applet_fill, NULL);

what i'm asking for is how could i refresh the label of the applet after
a fixed period of time... (now the applets refresh when mouse-clicked)
tnx in advance

M@